Hydraulic machine for bending metal plate

Abstract

The utility model provides a hydraulic machine for bending a metal plate. The hydraulic machine comprises a main body mechanism and a limiting mechanism, the main body mechanism comprises a bottom plate, four supporting frames are fixedly connected to one side of the bottom plate, a top plate is fixedly connected to one sides of the supporting frames, a hydraulic cylinder is installed on one side of the top plate, a piston rod of the hydraulic cylinder is fixedly connected with a fixing disc, a male die is arranged on one side of the fixing disc, and a female die is arranged on one side of the bottom plate. The limiting mechanism comprises movable plates, the two movable plates are symmetrically arranged on one side of the bottom plate, and sliding rails are symmetrically installed on the two sides of the bottom plate; the spring is arranged to push the sliding block, so that the sliding block drives the movable plate to move, the movable plate is matched with the limiting rod to horizontally limit a metal plate, bending dislocation caused by horizontal deviation and sliding of the metal plate is prevented, and the contact surface with the metal plate during limiting of the metal plate is reduced; the contact surface between the metal plate and the limiting rod is prevented from being abraded during deformation.

Description

Technical Field

[0001] The utility model relates to a hydraulic press, in particular to a hydraulic press for bending metal plates, belonging to the technical field of metal plate processing. Background Art

[0002] There are two types of workpiece bending: cold bending and hot bending. Bending carried out at normal temperature is called cold bending, which is usually completed by fitters. The stamping forming process of bending metal plates, pipes and profiles into workpieces with a certain curvature, shape and size is widely used in the manufacture of high-pressure vessels, boiler drums, boiler tubes, steel plates and ribs of ship hulls, various utensils, instrument components and cabinet moldings, etc. When the material is bent, the stress states of each part in the deformation zone are different. The part in the middle of the cross-section that does not deform is called the neutral layer. The metal outside the neutral layer is subjected to tensile stress and undergoes elongation deformation;

[0003] Chinese Patent Publication (CN202321605709.5) discloses a bending device for manufacturing metal structures. By placing a metal plate on the top of the bending fixed part, the cylinder pushes the moving plate downward, the moving plate drives the bending moving part downward, and the bending moving part cooperates with the bending notch to punch and bend the metal plate. By controlling the cylinder in reverse, the bending moving part moves upward and leaves the bending fixed part, and the metal plate can be taken out, thus completing the bending of the plate. However, when the existing hydraulic press for bending metal plates is in use, due to the lack of a limiting component for the plate, during or before bending, the bending position is easily misaligned due to the horizontal offset of the plate. After the plate is fixed, the contact surface between the plate and the fixing component will generate friction with the fixing component as the plate deforms, resulting in wear of the plate;

[0004] To solve the above technical problems, a hydraulic press for bending metal plates is proposed. Summary of the Utility Model

[0005] In view of this, the utility model provides a hydraulic press for bending metal plates to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial option.

[0006] The technical solution of the utility model is realized as follows: A hydraulic press for bending metal plates includes a main body mechanism and a limiting mechanism;

[0007] The main body mechanism includes a bottom plate. Four support frames are fixedly connected to one side of the bottom plate. A top plate is fixedly connected to one side of the support frames. A hydraulic cylinder is installed on one side of the top plate. The piston rod of the hydraulic cylinder is fixedly connected to a fixed disk. A convex mold is arranged on one side of the fixed disk. A concave mold is arranged on one side of the bottom plate;

[0008] The limiting mechanism includes a movable plate. The two movable plates are symmetrically arranged on one side of the bottom plate. Slide rails are symmetrically installed on both sides of the bottom plate. Sliders are slidably connected inside the slide rails. One side of the slider is fixedly connected to the movable plate. One side of the slider is fixedly connected to a spring. One end of the spring is fixedly connected to the slide rail. Fixing holes are equidistantly distributed on one side of the movable plate. Limiting rods are symmetrically connected by threading through the fixing holes on one side of the movable plate.

[0009] Further preferably, second bolts are equidistantly distributed and threadedly connected to one side of the fixed disk. One end of the second bolt is threadedly connected to the convex die. Fixing plates are fixedly connected to both sides of the concave die. First bolts are symmetrically threadedly connected inside the fixing plates. One end of the first bolt is fixedly connected to the bottom plate.

[0010] Further preferably, slide rods are equidistantly distributed and fixedly connected to one side of the fixed disk. One end of the slide rod penetrates through the top plate. The side of the slide rod penetrating through the top plate is slidably connected to the top plate.

[0011] Further preferably, a fixing frame is fixedly connected to the end of the slide rod penetrating through the top plate. Limiting frames are symmetrically fixedly connected to one side of the top plate.

[0012] Further preferably, diversion grooves are integrally formed on one side of the limiting rod at equal intervals. A tray is fixedly connected to one side of the limiting rod.

[0013] Further preferably, shock-absorbing feet are equidistantly distributed and fixedly connected to the bottom of the bottom plate.

[0014] Due to the adoption of the above technical solutions in the embodiments of the present utility model, it has the following advantages:

[0015] First, the present utility model drives the slider by setting a spring, so that the slider drives the movable plate to move. The movable plate cooperates with the limiting rod to horizontally limit the metal plate, preventing the metal plate from generating horizontal offset sliding and causing bending misalignment, and reducing the contact surface with the metal plate when limiting the metal plate, preventing the contact surface with the limiting rod from being worn when the metal plate deforms.

[0016] Second, the present utility model enhances the stability of the convex die during movement by setting a slide rod and a fixing frame, and sets a limiting frame to limit the movement range of the convex die, preventing the plate from being damaged due to excessive bending force.

[0017] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present utility model will be readily apparent by reference to the drawings and the following detailed description. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 Structural diagram of the present utility model;

[0020] Figure 2 Connection structural diagram of the bottom plate in the present utility model;

[0021] Figure 3 Connection structural diagram of the top plate in the present utility model;

[0022] Figure 4 Connection structural diagram of the hydraulic cylinder in the present utility model.

[0023] Reference numerals: 10, main body mechanism; 11, bottom plate; 12, shock-absorbing feet; 13, female die; 14, fixing plate; 15, first bolt; 16, support frame; 17, top plate; 18, hydraulic cylinder; 19, sliding rod; 31, fixing frame; 32, limiting frame; 33, fixing disc; 34, second bolt; 35, male die; 20, limiting mechanism; 21, movable plate; 22, slide rail; 23, slider; 24, fixing hole; 25, limiting rod; 26, diversion groove; 27, tray; 28, spring. Detailed implementation manners

[0024] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present utility model. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0025] The following will detail the embodiments of the present utility model with reference to the drawings.

[0026] As Figures 1-4 shown, the embodiment of the present utility model provides a hydraulic press for bending metal plates, which is composed of a main body mechanism 10 and a limiting mechanism 20.

[0027] The main body mechanism 10 includes a bottom plate 11 and a top plate 17. Four support frames 16 are fixedly connected to one side of the bottom plate 11. The top of the support frame 16 is fixedly connected to the top plate 17. A hydraulic cylinder 18 is installed on one side of the top plate 17. The piston rod of the hydraulic cylinder 18 is fixedly connected to a fixed plate 33. A punch 35 is provided on one side of the fixed plate 33. And a second bolt 34 is threadedly connected to the fixed plate 33 at equal intervals. One end of the second bolt 34 is threadedly connected to the punch 35. Connecting the punch 35 to the hydraulic cylinder 18 through the fixed plate 33 facilitates the replacement of the punch 35 when needed. A die 13 is provided on one side of the bottom plate 11. Fixing plates 14 are fixedly connected to both sides of the die 13. First bolts 15 are symmetrically threadedly connected inside the fixing plates 14. One end of the first bolt 15 is threadedly connected to the bottom plate 11, facilitating the disassembly and replacement of the die 13. Shock-absorbing feet 12 are fixedly connected to the bottom of the bottom plate 11 at equal intervals. The hydraulic press is supported by the shock-absorbing feet 12 to enhance the overall stability.

[0028] In one embodiment, in order to enhance the stability of the punch 35 during movement, slide rods 19 are fixedly connected to the fixed plate 33 at equal intervals. One end of the slide rod 19 penetrates the top plate 17. The side of the slide rod 19 penetrating the top plate 17 is slidably connected to the top plate 17. The end of the slide rod 19 penetrating the top plate 17 is fixedly connected to a fixed frame 31. Limiting frames 32 are symmetrically fixedly connected to one side of the top plate 17. The limiting frames 32 limit the movement range of the punch 35.

[0029] The limiting mechanism 20 includes a movable plate 21 and limiting rods 25. Two movable plates 21 are symmetrically arranged on one side of the bottom plate 11. Slide rails 22 are symmetrically installed on both sides of the bottom plate 11. Sliders 23 are slidably connected inside the slide rails 22. One side of the slider 23 is fixedly connected to the movable plate 21. One side of the slider 23 is fixedly connected to a spring 28. One end of the spring 28 is fixedly connected to the slide rail 22. The spring 28 pushes the slider 23 to move, causing the slider 23 to drive the movable plate 21 to move towards the die 13, facilitating the limitation of the sheet placed on the die 13. Fixing holes 24 are arranged at equal intervals on one side of the movable plate 21. The limiting rods 25 are threadedly connected to the movable plate 21 through the fixing holes 24. The metal sheet is limited by the limiting rods 25 to reduce the contact area.

[0030] In one embodiment, in order to reduce the friction between the limiting rod 25 and the contact surface of the sheet, diversion grooves 26 are integrally formed on one side of the limiting rod 25 at equal intervals. A tray 27 is fixedly connected to one side of the limiting rod 25. The diversion grooves 26 are provided in cooperation with the tray 27 to facilitate the application of lubricating oil to the surface of the limiting rod 25 and reduce the surface friction.

[0031] When the utility model works: connect the punch 35 to the fixed disk 33 through the second bolt 34, and connect the die 13 to the bottom plate 11 through the first bolt 15. Select different numbers of limit rods 25 according to the shape and size of the plate. Connect the limit rods 25 to the movable plate 21 through the fixing holes 24. Apply lubricating oil to the limit rods 25 to reduce surface friction. Pull the movable plate 21 to both sides, place the plate on the punch 35, release the movable plate 21, so that the spring 28 pushes the slider 23 to move. The slider 23 drives the movable plate 21 to move towards the plate, so that the limit rods 25 contact the plate, and the plate is horizontally limited by the limit rods 25 to prevent the plate from sliding and shifting. Start the hydraulic cylinder 18 to drive the punch 35 to press down, and the punch 35 cooperates with the die 13 to perform a bending process on the plate.

[0032] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various changes or substitutions thereof, and these should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claimed rights.

Claims

1. A hydraulic press for bending metal sheets, characterized in that: It comprises a main body mechanism (10) and a limiting mechanism (20); The main body mechanism (10) comprises a bottom plate (11), one side of the bottom plate (11) is fixedly connected to four support frames (16), one side of the support frame (16) is fixedly connected to a top plate (17), one side of the top plate (17) is installed with a hydraulic cylinder (18), the piston rod of the hydraulic cylinder (18) is fixedly connected to a fixed plate (33), one side of the fixed plate (33) is provided with a male die (35), and one side of the bottom plate (11) is provided with a female die (13); The limiting mechanism (20) comprises a movable plate (21), wherein two movable plates (21) are symmetrically arranged on one side of the base plate (11), and slide rails (22) are symmetrically installed on both sides of the base plate (11), and a slider (23) is slidably connected inside the slide rail (22), and one side of the slider (23) is fixedly connected to the movable plate (21), and one side of the slider (23) is fixedly connected to a spring (28), and one end of the spring (28) is fixedly connected to the slide rail (22), and fixing holes (24) are equidistantly distributed on one side of the movable plate (21), and one side of the movable plate (21) is symmetrically threadedly connected to a limiting rod (25) through the fixing holes (24).

2. A metal plate bending hydraulic press according to claim 1, characterized in that: One side of the fixing plate (33) is equidistantly threadedly connected with second bolts (34), one end of the second bolts (34) is threadedly connected to the male mold (35), both sides of the female mold (13) are fixedly connected with fixing plates (14), the interior of the fixing plate (14) is symmetrically threadedly connected with first bolts (15), one end of the first bolts (15) is fixedly connected to the bottom plate (11).

3. The metal plate bending hydraulic press according to claim 1, characterized in that: One side of the fixed plate (33) is evenly distributed and fixedly connected with sliding rods (19), one end of the sliding rod (19) passes through the top plate (17), and the sliding rod (19) passes through one side of the top plate (17) and is slidably connected to the top plate (17).

4. A metal plate bending hydraulic press according to claim 3, characterized in that: One end of the slide bar (19) passing through the top plate (17) is fixedly connected to a fixing frame (31), and one side of the top plate (17) is symmetrically fixedly connected to a limiting frame (32).

5. The metal plate bending hydraulic press according to claim 1, characterized in that: One side of the limiting rod (25) is uniformly distributed with guide grooves (26) integrally formed thereon, and one side of the limiting rod (25) is fixedly connected to a tray (27).

6. The metal plate bending hydraulic press according to claim 1, characterized in that: The bottom of the base plate (11) is evenly distributed and fixedly connected with shock-absorbing feet (12).

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